Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe76d1a8273069b1…

MALICIOUS

PDF

55.9 KB Created: 2020-08-06 21:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a991ee337a3cc6133cb83bc683927118 SHA-1: c198a1abdf941392b82da6453d2f2225a35b528a SHA-256: fe76d1a8273069b1f7d7ceefffa1c387675c6002285c192ac649d512fc121298
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=rudram+namakam+telugu+pdf+download`. This link is presented within the document body, suggesting a social engineering lure to trick users into downloading further content. The presence of numerous other PDF links, many hosted on `cdn.shopify.com`, indicates a link farm strategy, likely to improve search engine ranking for specific keywords and distribute malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=rudram+namakam+telugu+pdf+download
    • http://files.loumurrey.com/uploads/1/3/2/6/132682542/rajun.pdf
    • http://files.missionepossibilehk.com/uploads/1/3/1/4/131437380/9118641.pdf
    • http://lerojoge.robbieerskine.com/uploads/1/3/1/8/131871980/1387902.pdf
    • http://files.jpheffernan.com/uploads/1/3/0/7/130775746/nipikeburagurow-daluru.pdf
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/77631525210.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/95784558369.pdf
    • https://cdn.shopify.com/s/files/1/0428/4930/4732/files/hemoptysis_evaluation_and_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/rifts_ultimate_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/80932483246.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/sorinifulodiviwiguwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/wunevisapawirokiroleve.pdf
    • https://cdn.shopify.com/s/files/1/0434/0537/7688/files/vigitixekop.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/hoobastank_the_reason_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/35949180284.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6088/files/xotarikopasojiwasele.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072f0.bin
cd7c861a7d06dead264d10e8fe376141051baa7666be7724b86762193aadfd2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F0 5348 bytes
font_01_sfnt_off00008522.bin
4fbdd2137401c635e3ae86e5e3583c06f47cb7482a5cfc1d446f10c55ffb59de
pdf-font-stream PDF embedded font (sfnt) at offset 0x8522 2200 bytes
font_02_sfnt_off00008eda.bin
75dc3a5c8d29ded696d6701862b4018e3a2fcfc1e0d1ea5d985d1ec1a14412b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDA 2136 bytes
font_03_sfnt_off000097f5.bin
ce23545e40766c28c9f9d7a5b598af81f5b8e92816b7081286bc5aae2e82baaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x97F5 19096 bytes